Building a Wasm-in-Wasm Virtualizer (with JIT decrypted paged memory)
The article discusses the development of a WebAssembly-in-WebAssembly virtualization engine. It highlights the security vulnerabilities of standard WebAssembly and outlines a step-by-step approach to building a custom instruction set architecture. The end goal is to create a secure environment for executing sensitive code without exposing it to potential threats.
- ▪WebAssembly is designed for portability and speed but is not inherently secure.
- ▪The article proposes building a virtualization engine to enhance the security of WebAssembly applications.
- ▪A custom instruction set architecture will be defined to obscure the code and protect sensitive logic.
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Story provenance
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Record
| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/trustsig/building-a-wasm-in-wasm-virtualizer-with-jit-decrypted-paged-memory-pk1 |
| Publication time | Mon, 18 May 2026 17:54:34 +0000 |
| Retrieval time | 2026-05-18T18:04:56.852Z |
| Last seen | 2026-05-18T18:04:56.852Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | DtrNadosQsLM |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3938710) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } TrustSig Posted on May 18 Building a Wasm-in-Wasm Virtualizer (with JIT decrypted paged memory) #webassembly #compiling #security #nieche Intro WebAssembly was built for portability and raw speed. It was definitely not built for keeping secrets. To really protect your code, you have to compile it down to a custom, undocumented bytecode and ship it with a tiny internal interpreter to run it securely.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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